JP2624287B2 - Latch mechanism - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch mechanism, and more particularly, to a latch mechanism for joining two butted panels or other members without gaps.

[Conventional technology]

Conventionally, a latch mechanism of this type is configured such that a rotatable latch of a latch is engaged with a hook of another member at a fulcrum of one member, and the recess elastically pulls or pushes the latch in the engaged state. The structure prevents the hooked state from coming off.

[Problems to be solved by the invention]

The above-described conventional latch mechanism performs a two-dimensional operation including an operation of rotating the latch and an operation of moving the latch in the rotation radial direction against the elastic force applied to the latch to engage the latch in the recess. Since it is required, it has a drawback that it is not suitable for connection of structures in outer space or the like where it is necessary to perform a hooking operation by a manipulator instead of manually.

An object of the present invention is to provide a latch mechanism which can be engaged by one-dimensional operation and can be easily engaged by a manipulator.

[Means for solving the problem]

The latch mechanism of the present invention includes a shaft pin protruding from a first member, a hanging rod protruding from a second member to be coupled to the first member, a long hole into which the shaft pin is inserted, A first spring that presses the shaft pin on one end; when the shaft rotates in the first rotation direction about the shaft pin as a rotation axis, the first spring hits the hanging rod and receives a force opposing the elasticity of the first spring; A latch having a side surface portion and a concave portion adjacent to the side surface portion, the concave portion being engaged by the engaging rod in a second rotation direction opposite to the first rotation direction by the elastic force of the first spring; and the concave portion of the latch. And a second spring for applying a torque in the second rotational direction to the latch in a non-engagement steady state.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

FIG. 1 is a plan view showing an embodiment of the latch mechanism of the present invention.

The embodiment shown in FIG. 1 is a latch mechanism for connecting panels 1 and 2 attached to each other, and includes a shaft pin 11 and a latch 21 projecting from the panels 1 and 2 respectively, and a latch 3.
, A roller 4 pivotally supported at one end of the latch 3, a spring 5 having both ends fixed at a fixed point 13 of the panel 1 and a fixed point 37 of the latch 3, and a stopper pin 12 provided on the panel 1. ing.

The latch 3 has a long hole 31 provided near the end opposite to the roller 4 so that the long axis thereof substantially coincides with the longitudinal direction thereof, and the shaft pin 11 inserted in the long hole 31 is provided in the roller 4 of the long hole 31. A hole 32 accommodating a spring 33 and a ball 34 pressed against the side end, a side portion 35 provided substantially at the center in the longitudinal direction, and a hanging rod 21 adjacent to the side portion 35
And a recess 36 that engages with

When the latch 3 is in the latching steady state position shown by the two-dot chain line, the spring 5 pulls between the fixed points 13 and 37 to apply a counterclockwise torque to the latch 3, and the latch 3 is Clockwise rotation is restricted, and it is in a stable state.

When the roller 4 is pushed downward in the drawing by the pressing surface 6 shown by a two-dot chain line, the latch 3 rotates clockwise, and when the straight line between the fixed points 13 and 37 passes through the dead point overlapping the shaft pin 11, the spring 5 The latch 3 is further rotated clockwise by the tension of
Contact 21.

When the roller 4 is further pressed by the pressing surface 6, the hanging rod 21 is moved to the side surface portion 35.
, The latch 3 moves rightward in the figure against the elasticity of the spring 33, and the engaging rod 21 engages with the recess 36 to stop the rotation.

The latch 3 receives the leftward force in the figure by the elasticity of the spring 33 in the engaged state, and elastically holds the engaging rod 21 in the recess 36, so that a gap is formed between the panels 1 and 2 or the engaging state is reduced. It does not come off alone.

When the pressing surface 6 presses the roller 4 to rotate the latch 3, the roller 4 rotates, so that little frictional force is applied to the pressing surface 6 in a direction perpendicular to the pressing force.

〔The invention's effect〕

As described above, the latch mechanism of the present invention can be engaged by a one-dimensional operation of pressing the roller in one direction, and at this time, the frictional force in the direction orthogonal to the pressing direction is hardly applied to the pressing surface. In a space or the like, there is an effect that the engaging operation can be easily performed by the manipulator.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention. 1,2 ... Panel, 3 ... Latch, 4 ... Roller, 5 ...
Spring, 6 ... Pressing surface, 11 ... Shaft pin, 12 ... Stopper pin, 13 ... Fixed point, 21 ... Hanging rod, 31 ... Long hole, 32 ...
Hole, 33 ... spring, 34 ... ball, 35 ... side surface, 36 ... recess, 37 ... fixed point.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Seiji Yokota 5-33-1, Shiba, Minato-ku, Tokyo Inside NEC Corporation (72) Inventor Takeshi Iwamura 3--20-4 Nishishinbashi, Minato-ku, Tokyo Japan Electrical Engineering Co., Ltd. (56) References JP-A-56-124716 (JP, A) JP-A-48-43145 (JP, U) JP-A-49-108660 (JP, U) JP-A 47-14372 (JP, Y1)

Claims (2)

(57) [Claims] A shaft pin protruding from a first member; a hanging rod protruding from a second member to be coupled to the first member;
A long hole in which the shaft pin is inserted, a first spring for pressing the shaft pin against one end of the long hole, and a push against the hanging rod when the shaft pin is rotated in a first rotational direction with the shaft pin as a rotation axis. A side surface portion which receives a force opposing the elastic force of the first spring, and a side portion adjacent to the side surface portion, which is caused by the elastic rod of the first spring to rotate with the hanging rod in a second rotational direction opposite to the first rotational direction. A latch having an engaging recess; a roller pivotally supported at an end of the latch opposite to the slot with respect to the recess; applying a torque in the second rotational direction to the latch in a non-engaging steady state; A latch mechanism comprising a second spring. 2. When the latch is in a rotational position between a non-latching steady state position and a latching position, a point on the latch opposite to the latch with a shaft pin interposed therebetween and a first member on the first member. 2. The latch mechanism according to claim 1, wherein said second spring pulls said point.